I hope you are documenting the hell out of everythign she does (exact dates, times, everything you see her doing that is a reflection of her invasion of your privacy. I would also- next time she steps foot on your property pull out yoru smartphone turn on the recorder and clearly state ANYTHING she says to you is being recorded, and state the date and time on the recording.
See how quickly she retreats then.
You need to setup some webcam/security cams and a DVR setup ASAP.
I would wonder if in this day and age you could even fight the "newspaper" announcment considering how few people actually recieve them nowdays.